Freelancer profile translated to English.

Description

👋 Symfony & Full-Stack PHP Developer – E-commerce & SaaS

Hello, I'm Paul Decalf, a Symfony & Full-Stack PHP developer specializing in the design and development of e-commerce sites, SaaS applications, and custom APIs.

I assist companies, startups, and freelancers in creating high-performing, secure, and scalable web solutions, with a strong emphasis on code maintainability and project longevity.

💡 What I can do for you

🧱 Solid back-end development

Symfony / PHP (Clean Architecture, best practices, security)

REST APIs & third-party service integration

Databases: MySQL, PostgreSQL, MongoDB

🎨 Modern & high-performing web applications

Front-end: React, Next.js, Angular

Fast, user-friendly, and responsive interfaces (TailwindCSS)

Custom dashboards and business tools

⚙️ E-commerce & SaaS

Creation or redesign of e-commerce platforms

Development of scalable SaaS applications

Payments, authentication, user management, roles & permissions

🚀 Deployment & reliability

Go-live (CI/CD, cloud, DevOps best practices)

Performance and security optimization

Maintenance, evolutions, and long-term support

🎯 What my clients get concretely

✔ A functional product quickly, without technical debt

✔ Clear, documented, and maintainable code

✔ Cost reduction through sustainable solutions

✔ Tools connected to their existing systems (CRM, ERP, payments, logistics)

✔ A reliable technical partner, not just an executor

🎓 Education & experience

🎓 Master's in Tech Lead (in progress)

💼 Full-Stack PHP Developer – apprenticeship at VERYSWING

💼 Full-Stack Developer – CAF des Yvelines

🤝 Projects delivered as a freelancer and in a team

🚀 Recent projects

GEOMETEO – Real-time weather geolocation application

(Angular, MongoDB)

SMOOZY – Family management web application

(Next.js, MongoDB)

MOI-SANS-IA – Awareness project on the reasoned use of AI

Industry field of expertise

Languages

French
Native or bilingual
English
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

VERYSWING
PHP Developer Apprentice
SOFTWARE PUBLISHING
January 2025 - Today (1 year and 4 months)
Paris, France
Development and optimization of PHP web applications:

Debugging and corrective maintenance to ensure application stability and continuity.

Implementation of performance profiling and monitoring (analysis of SQL queries, server response times, memory consumption).

Front-end and back-end optimization to reduce loading times and provide a smooth user experience.

Integration and optimization of databases (MySQL, PostgreSQL, MongoDB).

Application of development best practices (unit tests, CI/CD, clear documentation).

Collaboration with business teams to transform functional needs into concrete technical solutions.

Implementation of scalable and secure solutions capable of handling load increases (scalability).
PHP PostgreSQL HTML5 CSS3 API
CAF des YVelines
Fullstack Developer Apprentice
TECH
September 2022 - September 2024 (2 years)
Paris, France
Development of internal tools for various company departments:

Design and development of several custom web applications to optimize internal processes (HR, accounting, logistics, support).

Development of business applications with Power Apps, allowing teams to easily access their tools on desktop and mobile.

Implementation of interactive dashboards with Power BI to centralize data, improve KPI tracking, and facilitate decision-making.

Automation of processes using Power Automate (e.g., automatic notifications, report generation, workflow validation).

Integration with other internal and external tools (CRM, ERP, databases, SharePoint).

Collaboration with business teams to analyze their needs and create tailored solutions, reducing manual tasks and improving productivity.

Deployment of secure, user-friendly, and scalable solutions, promoting rapid user adoption.
PHP JavaScript PostgreSQL Symfony Web Integration